* {
    margin: 0;
    padding: 0;
}

html,
body {
    min-width: 960px;
    margin: 0 auto;
    background: #e6e7e9;
}

a{
    text-decoration: none;
}

.head {
    width: 1024px;
    height: 90px;
    line-height: 90px;
    text-align: center;
    background: lightblue;
}
.foots{
    height: 75px;
    box-sizing: border-box;
    padding: 10px 0;
    background: #07111b;
    text-align: center;
    line-height: 30px;
    color: #c8cdd2;
    /*position: fixed;
    bottom:0;*/
    z-index: 9;
}
.main {
    width: 970px;
    height: 380px;
    margin: 20px auto;
    background: pink;
    display: flex;
    border-radius: 10px;
    overflow: hidden;
}

.main .menu-left {
    flex: 180px;
    width: 180px;
    height: 100%;
    background: #2b333b;
    display: flex;
    flex-direction: column;
    padding: 8px 0 8px 6px;
    position: relative;
}

.main .menu-left .item {
    width: 100%;
    height: 52px;
    box-sizing: border-box;
    line-height: 52px;
    text-align: left;
    padding-left: 6px;
}
.main .menu-left .item .course-detail{
    position: absolute;
    left: 174px;
    top: -8px;
    width: 660px;
    height: 380px;
    top: 0;
    background: #fff;
    z-index: 99 ;
    display: none;
}
.main .menu-left .item .course-detail .one{
    width: 540px;
    margin: 0 auto;
}
.main .menu-left .item .course-detail .one p{
    color: #4d555d;
    line-height: 22px;
}
.main .menu-left .item .course-detail .one p a{
    color: #4d555d;
    display: inline-block;
    background: #fff;
}
.main .menu-left .item .course-detail .one p a span{
    margin-right: 20px;
}
.main .menu-left .item .course-detail .one .base{
    position: relative;
    font-size: 14px;
    font-weight: bold;
}
.main .menu-left .item .course-detail .one .base .line{
    height: 1px;
    width: 480px;
    background: #777;
    opacity: 0.3;
    position: absolute;
    left: 50px;
    top: 26px;
}
.main .menu-left .item .course-detail .two{
    width: 660px;
    height: 200px;
    background: lightblue;
    bottom: 0;
    position: absolute;
    background: #f8fafc;
}
.main .menu-left .item .course-detail .two .item-box{
    width: 540px;
    height: 200px;
    margin: 0 auto;
}
.main .menu-left .item .course-detail .two .item-box a{
    width: 230px;
    height: 80px;
    background: #fff;
    border-radius: 5px;
    float: left;
    margin-right: 36px;
    margin-top: 12px;
}
.main .menu-left .item .course-detail .two .item-box a .item-course{
    width: 230px;
    height: 80px;
    display: flex;
}
.main .menu-left .item .course-detail .two .item-box a .item-course .item-course-l{
    width: 70px;
}
.main .menu-left .item .course-detail .two .item-box a .item-course .item-course-l img{
   width: 70px;
   height: 44px;
   border-radius: 5px;
}
.main .menu-left .item .course-detail .two .item-box a .item-course .item-course-r{
   width: auto;
   line-height: 20px;
   margin-left: 4px;
}
.main .menu-left .item .course-detail .two .item-box a .item-course .item-course-r p:first-child{
    font-size: 12px;
    width: 160px;
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
}
.main .menu-left .item .course-detail .two .item-box a .item-course .item-course-r p:nth-child(2) span{
    margin-right: 5px;
    font-size: 12px;
}
.main .menu-left .item .course-detail .two .item-box a .item-course .item-course-r p:last-child{
    color: #888;
    font-size: 14px;
}

.main .menu-left .item:hover a {
    background: #6b7176;
    border-radius: 5px 0 0 5px;
}
.main .menu-left .item:hover  .course-detail {
    display: block;
}

.main .menu-left .item a {
    text-decoration: none;
    display: block;
    display: flex;
    justify-content: space-between;
}

.main .menu-left .item a .group {
    margin-left: 10px;
    color: #a8acaf;
}

.main .menu-left .item a .tip {
    color: #a8acaf;
    margin-right: 10px;
}

.main .menu-right {
    flex: 790px;
    width: 790px;
    width: 100%;
}

.main .menu-right .banner {
    width: 790px;
    height: 268px;
    background: blue;
}
.main .menu-right .banner .swiper-container {
    width: 100%;
    height: 100%;
}
.main .menu-right .banner .swiper-slide {
    text-align: center;
    font-size: 18px;
    background: #fff;
    /* Center slide text vertically */
    display: -webkit-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    -webkit-align-items: center;
    align-items: center;
}
.main .menu-right .banner .swiper-slide img{
    width: 100%;
    height: 100%;
}
.main .menu-right .tips {
    width: 790px;
    height: 112px;
    background: #fff;
}


.main .menu-right .tips .path-banner {
    width: 790px;
    height: 112px;
    overflow: hidden;
    box-shadow: 0 4px 8px 0 rgba(7, 17, 27, .1);
    background-color: #fff;
    text-align: center;
    padding: 0 18px
}

.main .menu-right .tips .path-banner i {
    display: inline-block;
    width: 36px;
    height: 36px;
    background: url(../images/bg.png) no-repeat;
    background-size: 100%;
    margin-top: 22px
}

.main .menu-right .tips .path-banner>a {
    display: block;
    transition: all .3s
}

.main .menu-right .tips .path-banner .i-web {
    background-position: center 0
}

.main .menu-right .tips .path-banner .i-php {
    background-position: center -36px
}

.main .menu-right .tips .path-banner .i-java {
    background-position: center -72px
}

.main .menu-right .tips .path-banner .i-android {
    background-position: center -108px
}

.main .menu-right .tips .path-banner .i-ios {
    background-position: center -144px
}

.main .menu-right .tips .path-banner>a {
    float: left;
    font-size: 0;
    width: 150px;
    height: 128px;
    overflow: hidden;
    text-decoration: none;
}

.main .menu-right .tips .path-banner>a:hover {
    margin-top: -4px
}

.main .menu-right .tips .path-banner .tit {
    font-size: 14px;
    color: #07111B;
    letter-spacing: 1px;
    margin-top: 4px
}

.main .menu-right .tips .path-banner .desc {
    font-size: 12px;
    color: #93999F;
    line-height: 16px;
    margin-top: 2px;
    font-weight: 200
}
/* 下面是实战推荐 */

.course {
    width: 960px;
    /*height: 380px;*/
    background: #fff;
    margin: 0 auto;
}

.course .types-title {
    text-align: center;
    color: #4d555d;
}

.course .types-title em {
    line-height: 36px;
}

.course .types-title .tit-icon {
    width: 56px;
    height: 36px;
    line-height: 36px;
    display: inline-block;
}

.course .types-title .tit-icon-l {
    width: 56px;
    height: 36px;
    background: url(../images/course.png) no-repeat;
    background-position: center 0;
    margin-top: 20px;
    background-size: 100%;
    vertical-align: bottom;
    margin-right: 10px;
}

.course .types-title .tit-icon-r {
    width: 56px;
    height: 36px;
    background: url(../images/course.png) no-repeat;
    background-position: center -36px;
    margin-top: 20px;
    background-size: 100%;
    vertical-align: bottom;
    margin-left: 10px;
}

.course .course-box {
    width: 100%;
    height: 260px;
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
}

.course .course-box .course-item {
    width: 180px;
    height: 210px;
}

.course .course-box .course-item .item-t {
    width: 180px;
    height: 100px;
    position: relative;
    transition: all .3s;
}

.course .course-box .course-item .item-t img {
    width: 100%;
    height: 100%;
    border-radius: 6px;
}

.course .course-box .course-item .item-t .java {
    position: absolute;
    bottom: 6px;
    left: 8px;
    font-size: 12px;
    color: #FFF;
    line-height: 16px;
}

.course .course-box .course-item .item-t .java label {
    display: inline-block;
    background: rgba(7, 17, 27, .4);
    border-radius: 12px;
    padding: 4px 8px;
    margin-bottom: 2px;
    margin-right: 0;
    font-weight: 200;
}

.course .course-box .course-item .item-b {
    width: 180px;
    height: 110px;
    position: relative;
    padding: 4px;
}

.course .course-box .course-item:hover .item-b h4 {
    color: red;
}

.course .course-box .course-item:hover .item-t {
    box-shadow: 0 8px 16px 0 rgba(7, 17, 27, .1);
}

.course .course-box .course-item .item-b h4 {
    height: 40px;
    font-size: 14px;
    color: #07111B;
    line-height: 19px;
    word-wrap: break-word;
    overflow: hidden;
    margin-top: 8px;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    transition: all .3s;
}

.course .course-box .course-item .item-b .title {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: #93999F;
    margin: 5px 0;
    padding: 0 8px;
}

.course .course-box .course-item .item-b .price {
    font-size: 12px;
    color: #4D555D;
    line-height: 20px;
    margin-top: 8px;
}
.contain{
    width: 960px;
    background: white;
    margin: 20px auto; 
}
.hd{
        width: 52px;
    height: 20px;
    line-height: 30px;
    font-weight: 700;
    font-size: 14px;
    color: #07111b;
    text-align: right;
 }
.f-left{
    float: left;
}
.f-right{
    float: right;
}
.ln{
    list-style: none;
}

.course-nav-item {
    display: inline-block;
    margin: 0 4px;
}

.course-nav-item a {
    display: block;
    line-height: 14px;
    margin-bottom: 10px;
    padding: 10px;
    font-size: 14px;
    text-decoration: none;
}

.course-nav-item a{
    color: #14191e;
}

   
.course-nav-item a:hover{

    color: #ec1500;
}

.on a{
    background: #2b333b;
    color:white;
    border-radius: 2px;
}
.course-nav-row {
    padding: 16px 0 5px;
    
}

.course-tool-bar {
   
    padding-top: 26px;
    padding-bottom: 16px;
    overflow: hidden;
    height: 14px!important;
    margin-top: -1px;
    padding-right: 15px;
    font-size: 12px;
}

.tool-left a {
    margin: 0 12px;
    line-height: 14px;
    font-size: 14px;
    color: #787d82;
    text-decoration:none; 
}    
.tool-left a:active{
    color: #f01414;
}

.present{
    color:#f01414 !important;
}

.tool-right{
    margin-top: -5px;
    color: #787d82;
}

.tool-chk {
    padding-bottom: 5px;
    padding-left: 52px;
    background: url(../images/sw-off.png) no-repeat;
   
}


.course-tool-bar .pager-action {
    vertical-align: middle;
    color: #fff;
    border-radius: 10px;
    margin-left: 5px;
    width: 18px;
    background-color: #d9dde1;
    background-repeat: no-repeat;
    font-size: 14px;
    text-align: center;
    margin-bottom: 2px;
}
.course-tool-bar .pager-action, .tool-chk {
    display: inline-block;
    height: 20px;
    line-height: 22px;
}
.course-tool-bar .tool-item {
    display: inline-block;
    line-height: 20px;
    margin: 0 8px;
    vertical-align: middle;
}

.pager-action:hover {
    color: #fff;
    background-color: #b7bbbf;
    text-decoration: none;

} 
.tool-iseasy {
    margin-right: 20px;
}
.course-tool-bar .tool-iseasy, .course-tool-bar .tool-iseasy a, .course-tool-bar .tool-left a {
    margin: 0 12px;
    line-height: 14px;
    font-size: 14px;
    color: #787d82;
}
.follow-learn, .tool-item .hide-learned {
    color: #787d82;
}
.course-tool-bar .tool-iseasy a.active, .course-tool-bar .tool-left a.active {
    color: #f01414;
    text-decoration: none;
}
.course-tool-bar a:hover{
    text-decoration: none;
}
.signIn{
    padding: 19px 20px;

}
.hoverRed:hover{
    color: #f01414;
    border-color:#f01414; 
}
.signBtn{
    border: 1px solid #999;
    height: 32px;
    line-height: 32px;
    width: 60px;
    text-align: center;
    cursor: pointer;
    border-radius: 15px;
    font-size: 15px;
    color: #999;
}

.gray{
    cursor: default;
    color: #777;
    border:1px solid #777;
}

.regist {
    float: right;
    padding: 25px 2px 25px 2px;
}

.regist > a {
    /*color: pink;*/
    text-decoration: none;
}

.regist > a:hover {
    /*color: #ddaaaa;*/
    text-decoration: none;
}

